年龄因子miR156对植物特异性代谢产物合成的影响

靳巧春, 于宗霞*, 冯宝民*
大连大学生命科学与技术学院, 辽宁大连116622

通信作者:于宗霞;E-mail: yuzongxia@sibs.ac.cn; fbmdlu@163.com

摘 要:

植物的生长发育不仅受到自然环境的调控还与年龄密切相关。miR156是植物中目前已知的唯一年龄因子, 调控了植物的时相转换、叶形态和花器官的发育、以及植物对生物和非生物胁迫响应等过程, 其表达水平随植物年龄的增长而减少。过量表达miR156导致植物幼态化, 而降低miR156的含量可使植物提前进入成年期。植物特异性代谢产物是在长期进化过程中植物适应环境变化的结果, 其种类和含量在植物不同生长阶段往往不同, 提示我们植物特异性代谢产物的合成可能受到年龄因子的调控。鉴于植物特异性代谢产物不仅对植物整个生命周期有着重要意义, 部分特异性代谢产物还具有重要的经济价值和药用价值, 本文概述了miR156时序性调控植物次生代谢产物生物合成的研究进展和发展趋势。

关键词:miR156; 年龄; 特异性代谢产物

收稿:2016-06-22   修定:2016-08-29

资助:国家自然科学基金(31540006)、植物分子遗传国家重点实验室和辽宁省博士科研启动基金(201501195)。

Effect of miR156 on synthesis of plant specialized metabolites

JIN Qiao-Chun, YU Zong-Xia*, FENG Bao-Min*
College of Life Sciences and Biotechnology, Dalian University, Dalian, Liaoning 116622, China

Corresponding author: YU Zong-Xia; E-mail: yuzongxia@sibs.ac.cn; fbmdlu@163.com

Abstract:

Plant development is not only controlled by environmental factors but also age. miR156 as the only age cue for now, regulates the morphological changes of leaf, flower development, as well as the responses of biotic and abiotic stresses. The expression levels of miR156 gradually decreased with plant age. Over-expression of miR156 will cause the prolongation of juvenile phase, on the contrary, the reduction of miR156 level will promote plant into reproduction phase. Plant specialized metabolites not only plays a key role in plant development, but also have high economic and pharmaceutical values, furthermore, the kinds and the contents of specialized metabolites vary with plant development. In this review, the recent advances in effects of miR156 on plant specialized metabolites will be summerized.

Key words: miR156; age; specialized metabolites

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